//第一步：查看数据库表空间位置
   select t1.name,t2.name from v$tablespace t1,v$datafile t2 where t1.ts# = t2.ts#;
    //第二步：创建临时及默认表空间 
    create temporary tablespace spacename_temp
    tempfile 'E:\APP\ADMINISTRATOR\ORADATA\ORCL\spacename.DBF'
    size 50m
    autoextend on
    next 50m maxsize 20480m
    extent management local;
    create tablespace spacename
    logging
    datafile '第一步的路径\tablespacename.DBF'
    size 50m
    autoextend on
    next 50m maxsize 20480m
    extent management local;
    //第三步：创建用户并指定表空间
    create user username identified by password
    default tablespace spacename
    temporary tablespace spacename_temp;
   //第四步：给用户授予权限
   grant dba,connect,resource to username;